Sammanfattning

Anaerobic digestion (AD) of Chicken manure (CM) often faces several obstacles such as high total ammonia nitrogen (TAN) concentration, inclusion of many hard-to-decompose litters as wood chips, and presence of inorganic soil particles. To address these obstacles, degradable fractions of CM were extracted by leaching and the chicken manure leachate (CML) obtained was used for AD. The effects of trace element (TE) supplementation in stimulating microbial activity and enhancing the AD process, under increasing organic loading rate (OLR) and TAN concentration, were investigated. The results showed that CML was successfully converted, reaching a stable methane yield of 288 mL g−1 VS when TAN was lower than 1.5 g L−1. Under higher OLR (0.85 gVS L−1 d−1) and TAN (2.64 g L−1), TEs supplementation gave 36.5% higher methane yield (p < 0.05). Overall, extracting leachate from CM in combination with TE supplementation was shown to be a promising strategy for CM treatment.

Nyckelord

chicken manure; leachate; biogas; ammonia inhibition; trace element

Publicerad i

Bioresource technology reports
2021, Volym: 14, artikelnummer: 100662

SLU författare

• Janke, Leandro

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    
  • Deutsche Biomasseforschungszentrum (DBFZ)

UKÄ forskningsämne

Energisystem


Publikationens identifierare

DOI: https://doi.org/10.1016/j.biteb.2021.100662

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/110905